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The RT5752 is a simple, easy-to-use, 2A synchronous step-down DC-DC converter with an input supply voltage range from 2.5V to 6V. The device builds in an accurate 0.6V reference voltage and integrates low R<sub>DS(ON)</sub> power MOSFETs to achieve high efficiency in TSOT-23-5, TSOT-23-6 and WDFN-6L 2x2 packages.<br /><br />The RT5752 adopts Advanced Constant On-Time (ACOT<sup>&reg;</sup>) control architecture to provide an ultrafast transient response with few external components and to operate in nearly constant switching frequency over the line, load, and output voltage range. The RT5752A operates in automatic PSM that maintains high efficiency during light load operation. The RT5752B operates in Forced PWM that helps to meet tight voltage regulation accuracy requirements. <br /><br />The RT5752 senses both FETs current for a robust over-current protection. The device features cycle-by-cycle current limit protection which prevents the device from the catastrophic damage in output short circuit, over current or inductor saturation. A built-in soft-start function prevents inrush current during start-up. The device also includes input under-voltage lockout, output under-voltage protection, over-voltage protection (RT5752AL/BL) and over-temperature protection to provide safe and smooth operation in all operating conditions.
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  • 输入电压范围：2.5V~6V
  • 集成 100mΩ/70mΩ 功率开关
  • 以 100% 占空比实现超低压差工作
  • 内部集成 1% 精度参考电压源
  • 典型工作频率：1.2MHz
  • 轻载节能模式（RT5752A）
  • ACOT® 控制架构
  • 内部集成 1.5ms 软启动
  • 使能控制输入
  • Power Good 指示
  • 负电流过流保护（RT5752B）
  • 欠压锁定保护、过压/欠压保护、逐周期电流限制和过热保护
  • 符合 RoHS 规范，不含卤素
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移动电话和手持式设备 机顶盒、电缆调制解调器和 xDSL 设备 WLAN ASIC 电源和存储装置电源 通用负载点低压 Buck 转换器
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